本小心翼翼地把车开进车库时从他们身边经过。Ben drove past them, nosing his car into the garage.“车在车库里吗？”——“不，还在外面。”"Was the car inside the garage?" — "No, it was still outside."他从车库的暗处走出来。He emerged from the dark recesses of the garage....
月球的引力the gravitational pull of the moon卫星被射入环绕月球的轨道.The satellite was launched into orbit around the moon.月球的石头和地球的不同.The lunar stone is different from earth's....
欧洲的交流电输出频率通常为50赫兹。In Europe, AC is usually generated at 50 Hz.你可在短波37.5赫兹上收到我们的节目.You can receive our program at short wave 37.5 MH.频率用赫兹即每秒钟的周数来计算.Frequency is measured in hertz, or cycles per second....